Joint for structural steel columns and girders



J. A. LARKIN May 18, 1948.

' JOINT FOR STRUCTURAL STEEL COLUMNS AND GIRDERS Filed Feb; 15, 1946Patented May 18, 1948 2 441.

UNITED STATES PATENT UFFICE TOINT. FORSTItUCTURALSTEEL COLUMN ANDGIRDERS John A. Larkin, New York, N. Y. Application February 15, 1946,Serial No. 647,691

r 4' Claims. (01. 189-36) 1 v v 2 This invention relates to fabricatedor built-up girders therewith. Fillers l6 are laid flatwise steelframework used in the erection of buildings against the portions 15',respectively, on opposite and other structures. sides thereof, and abutthe flanges [2. Connect- More particularly, the invention relates to aing angles l1 abut the fillers l6 and the flanges joint constructionbetween columns and girders or 5 l2. Rivets 18 extend through the anglesl1, fillers beams such as disclosed in United States Letters l6 andportions IE to rigidly connect the gussets Patent No. 1,727,293 grantedto me. M to the flang I2.

This joint construction includes the use 0 In order to complete thebuilt-up column elongusset plates integrated in a column to providegated plates l9, which are equal in length to the means for connectingbeams or girders to the 10 length of the column section, are laidagainst the column and sustaining the same. web 10 on opposite sides,respectively. These The principal object of the present invention platesI9 therefore extend over the gussets M is the provision of a structuralintegrality in since the latter are in the plane of the web I. which useis made of continuous elements which The plates l9 constitutes splices.The plates l9 serve as splice plates, to aid in holding the gusaresubstantially equal in width to the width of sets in place as parts ofthe web of a column, the web It] and are substantially equal in thickandto reinforce the formed web throughout the neSs to the thickness of thefillers I6. Connectentire length thereof in proportion to the thicking aes abut the flanges l2 and the sp ic ness of the splice plates and insuch ratio, as to plates l at each d Of e eb 0. R v ts 2! increase thebearing capacity of the column, and 20 extend through the contiguousangles l1 and 20 also to add to the value of the columns resistance andflange l2 at each side of the web. Rivets 22 to the torsional ortwisting strains to which the exte d through the angles 20, Spliceplates and column is subjected. the web plates H). The parts are thusrigidly h nature 1 t invention and t t secured to each other to producea column secguishing features and advantages will appear 25 tion whichis compact with a continuous reinwhen the following specification isread in conce ent O t e Web throughout the length of j n ti ith theaccompanying drawing in the column section by reason of the nature andwhicharrangement of the splice plates. Also, the gus- Fig. 1 is asectional perspective of a column secsets are securely integrated in thecolumn section, t t gusset fabricat d in accordance with as well asbeing reinforced by the splice plates. th present invention, portionsbeing broken A column made of sections constructed in the away to h ce tfeatures manner illustrated and described has increased Fig. 2 is ahorizontal sectional view. d bearing a t a d a d d str ngth in re- Fig.3 is an exploded perspective vie Showing sisting torsional or twistingstrains and stresses certain parts of the column section. to which thecolumn is j t d- According to requirements, columns for the I claim:erection of exceptionally high buildings, are each 1. In a structuralsteel column section of precomposed of sections joined in longitudinalalinedetermined length, web plates vertically spaced ment. It is to thistype of column to which the apart, flange plates arranged at rightangles to present invention is primarily applied. 40 the web plates,said flange plates having slots The built-up column includes elongatedplates therein respectively, the length of each slot equal H] and II.The plates l0 constitute the web of to and alined with the space betweenthe web the column. The plates H are arranged at right plates, a gussetplate positioned between the web angles to the plates l0 and provideflanges l2. plates in the same plane and p jecting th The web plates IDare vertically spaced apart. said slots, splice plates positioned onopposite Each of the plates II has slots 13 therein, equal sidesrespectively of the web plates and the gusset in size to and inalinement with the space beplate in contact therewith flatwise, eachsplice tween the web plates ID. A plate l4 extends a plate beingcoextensive in length with the length crosswise of the plates II in apair of registering of said column section and each splice plate beslotsin the plates H with the adjacent ends of ing the same width as the webplates, connecting the web plates Ii] abutting the plate [4. The anglesabutting the flange and splice plates, se-

plate l4 constitutes a gusset in the plane of the curing means extendingthrough said angles, web and forms a part thereof. The opposite endsplice plates and web plates, and securing means portions 15 of thegusset l4 project beyond the I extending through said angles and flangeplates. plates II for the connection of suitable beams or 2. In astructural steel column section as set 3 forth in claim 1, fillers laidagainst the projecting end portions of said gusset plate, anglesabutting the fillers and flange plates, and securing means extendingthrough said last mentioned angles,

fillers and the projecting portions of said gusset 5 plate.

3. In a structural steel column section, web plates vertically spacedapart, flange plates abutting the web platesat right angles on oppositesides respectively, said flange plates having longi- 10 tudinal slotstherein in registry with each other and with the space between said webplates, a

gusset plate positioned between said web plates];

in the same plane and projecting through said slots, splice plates laidagainst the web platesand gusset plate on opposite sides respectivelyand in contact therewith fiatwise, each of said splice platessubstantially equal in width-to the width of the web plates andextending continuously from one endof the column section to 20 the otherend, and means securing the splice plates to the web plates andflangeplates.

h REFERENCES CITED The following references are of record in the iile ofthis patent:

' Y UNITED STATES PATENTS nmate?" Name Date 1,727,293 Larkin Sept. 3,1929 1,791,897

Hyde et al. Feb. 10, 1931

